[time-nuts] nubie querie

Brooke Clarke brooke at pacific.net
Thu Mar 4 18:25:20 UTC 2010


Hi Tom:

In the last slide you show a sand timer.  Do you have accuracy data for it?

Have Fun,

Brooke Clarke
http://www.PRC68.com


Tom Van Baak wrote:
>> I`m not sure that questions like these is welcome on this list, but 
>> here goes anyway :
>>
>> 1/ What are the the 10 sources of the most constant [invariant] 
>> frequencies known to man, in order of decreacing constancy? Four 
>> immediately come to mind.
>>
>> 2/ What is the mechanism in an oscillator, that is responsible for 
>> phase noise? [In only one sentence please]
>> If this is known, then it becomes easier to design low phase noise 
>> oscillators.
>>
>> I hope you enjoy these questions,.................................Don.
>
> Don,
>
> See http://www.leapsecond.com/ten/
> and http://www.leapsecond.com/ten/clock-powers-of-ten-tvb.pdf
>
> /tvb
>
>
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